Objective To observe the effect of Yangxue Qingnao Granule on the ultrastructures and expression of p38 mitogen activated protein kinases (p38MAPK) in CA1 area of hippocampus in vascular dementia rats. Methods 180 Sprague-Dawley rats were randomly di-vided into sham group, vascular dementia model group (model group) and Yangxue Qingnao Granule treatment group (treatment group). The vascular dementia was modeled with modified Pulsineli's four-vessel occlusion. The ultrastructure of CA1 area was observed with trans-mission electron microscope, while the expression of p38MAPK in CA1 area was detected with immunohistochemstry and Western blotting 1, 2, 4 and 8 weeks after modeling. Results In the model group, pyknosis, nuclear dissolution, heterochromatin margination and mitochon-dria swelling were found in most of the neurons in CA1. In the treatment group, the distribution of chromatin was well-proportioned, and mi-tochondrion and other organelle were normal. In the model group, the expression of p38MAPK increased at each time point compared with the sham group (P<0.01), and peaked 4 weeks after modeling, and decreased in the treatment group compared with the model group (P<0.01). Conclusion Yangxue Qingnao Granule can improve the ultrastructure of neuronal in CA1 area of hippocampus of vascular dementia rats, which may relate with the inhibition of the expression of p38MAPK.

This study was aimed to observe the effect of Yang-Xue Qing-Nao(YXQN) granules on the expression of brain-derived neurotrophic factor (BDNF) and basic fibroblast growth factor (bFGF) in CA1area of hippocampus among vascular dementia (VD) rats.A total of 72 SD rats were randomly divided into the sham operation group,VD model group (model group) and YXQN treatment group (treatment group).The VD rat model was prepared by modified Pulsineli's four-vessel occlusion.The learning and memory abilities of rats were detected by the Morris water maze.The protein expressions of BDNF and bFGF were detected by the immunohistochemical analysis.The results showed that compared with the sham operation group,there was obvious learning and memory disorders in the model group with increased protein expressions of BDNF and bFGF in CA1 area of hippocampus at difference time points (P<0.01).Compared with the model group,the learning and memory abilities of rats in the treatment group were significantly improved; and the protein expressions of BDNF and bFGF in CA1 area of hippocampus were significantly increased at difference time points (P<0.01).The expression was the highest on the 4th week.It was concluded that YXQN granules can improve the learning and memory abilities of VD rats.Its mechanism may be related to the upregulation of protein expression of BDNF and bFGF.

This study was aimed to observe the effect ofYang-Xue Qing-Nao(YXQN) granules on expressions of glycogen synthase kinase-3β (GSK-3β) andβ-catenin in CA1 area of hippocampus among vascular dementia (VD) rats. A total of 72 SD rats were randomly divided into the sham operation group, VD group (model group) and the YXQN granules treatment group (treatment group). The VD rat model was prepared by modified Pulsineli’s four-vessel occlusion. The expressions of GSK-3β andβ-catenin in CA1 area of hippocampus were detected by immunohistochemistry and western blotting at the 1st week, 2nd week, 4th weeks and 8th week after VD model operation. The results showed that expressions of GSK-3βwere increased in the model group at different time points, which were many quantities of expression at the 1st week, and a large number of expressions at the 2nd week. It reached peak at the 4th week; and began to decline but still higher at the 8th week. Compared with the sham operation group, the expression of GSK-3β was significantly increased in the model group at different time points (P < 0.01). The expression ofβ-catenin was increased in the model group at different time points. However, there was no statistical significance compared with the sham operation group (P > 0.05). Compared with the model group, expressions of GSK-3β andβ-catenin were significantly increased in the treatment group at different time points (P < 0.01). It was concluded that YXQN granules upregulated the expression of GSK-3β andβ-catenin, which may be helpful to VD treatment.

BACKGROUND:Bone marrow mesenchymal stem cell(BMSC) transplantation is one of the developmental directions in the treatment of femoral head necrosis. In recent years, the use of superparamagnetic iron oxide (SPIO) nanoparticles labeled target cells traced by MRI imaging method has become the focus of the study.
OBJECTIVE:To observe the in vivo MRI tracking and the curative effects of SPIO-labeled BMSC transplantation on rabbit femoral head necrosis.
METHODS:SPIO-labeled BMSCs, unlabeled BMSCs, and normal saline were injected in situ into the necrotic femoral head of rabbits. Fol owing MRI dectection, the image changes of transplanted BMSCs marked by SPIO were observed among the three scanning sequences of SE T2WI, FSE T2WI and GRE T2*WI. Meanwhile, the area percentage of newly formed bone trabecula in the defect samples under high power lens were observed and calculated for statistical analysis.
RESULTS AND CONCLUSION:In situ celltransplantation group showed the emerging and extinctive time of the decreased-signal region was different among the three scanning sequences of SE T2WI, FSE T2WI and GRE T2*WI. It was found that the decreased-signal region of the MRI scanning sequences was the target of the present experiment. No obvious signal change occurred in the control side. After 6 weeks of transplantation, the area percentage of newly formed bone trabecula in the defect samples showed no difference in SPIO-labeled and unlabeled BMSC transplantation groups (P>0.05), but it was higher than that in the control side (P<0.01). The SPIO-labeled BMSCs and unlabeled BMSCs are shown to have the same effects in the treatment of femoral head necrosis. The SPIO-labeled BMSCs can be observed obviously by MRI detection in vitro.

Objective To observe the clinical efficacy of Feisu Granules,and its effects on quality of life,coagulation and immune function in acute exacerbation of chronic obstructive pulmonary disease(AECOPD)with syndrome of phlegm-heat and blood stasis of lung.Methods Totally 120 AECOPD patients were divided into observation group and control group according to random number table method,with 60 cases in each group.The control group was given conventional Western medicine treatment,and the observation group received Feisu Granules treatment on the basis of the control group,one bag each time,three times a day,orally.The treatment for both groups lasted for 7 d.The clinical efficacy of both groups were observed.TCM symptom scores,St.George's respiratory questionnaire(SGRQ)score,coagulation function indexes(fibrinogen,D-dimer),and immune function indexes(CD4+,CD8+,CD4+/CD8+)of both groups were compared.The side effects were observed.Results The total effective rate in the observation group(93.10%)was significantly higher than that of the control group(79.66%),with statistical significance(P<0.05).Compared with before treatment,TCM symptom scores,scores of cough,wheezing,venous congestion,and SGRQ score decreased in both groups after treatment(P<0.05);after treatment,the observation group had lower above scores than the control group(P<0.05).Compared with before treatment,both groups showed a decrease in plasma fibrinogen and D-dimer levels after treatment(P<0.05);after treatment,the observation group showed lower levels of plasma fibrinogen and D-dimer compared with the control group(P<0.05).Compared with before treatment,the peripheral blood CD4+ and CD4+/CD8+ levels in both groups significantly increased after treatment,while CD8+ levels significantly decreased(P<0.05);after treatment,the peripheral blood CD4+ and CD4+/CD8+ in the observation group were higher than those in the control group,while CD8+ was lower than those in the control group(P<0.05).Neither group had any drug-related side effects.Conclusion On the basis of conventional Western medicine,the combination of Feisu Granules in the treatment of AECOPD with syndrome of phlegm-heat and blood stasis of lung can significantly improve clinical efficacy,improve patient quality of life,facilitate coagulation function recovery,and enhance cellular immune function.

Forensic science is looking for clues at a crime scene in order to reconstruct the crime scene.Classic clues include DNA and fingerprints.Forensic microbiology is a branch of forensic medicine that uses microbes as clues,providing us information about lifestyle,circadian rhythms,geographic locations,postmortem intervals,cancers,and oral or systemic diseases.Oral cavity,as the place with the second largest number of microorganisms,can provide researchers with microbial information of each ecological niche,and assist in the prediction,diagnosis and monitoring of oral or systemic diseases.This paper reviews the composition of oral microbiome,the application in oral diseases,systemic diseases and forensic medicine,with the aim of providing some references for the development of forensic microbiology based on oral microbiome.

Objective To evaluate biomechanical properties of the personalized titanium alloy short femoral prosthesis by finite element analysis. Methods Based on the validated femoral finite element model, the base of the femoral neck was simulated, and by inserting different short femoral prostheses, four total hip replacement (THR) models, namely, the SMF stem model (Model A), BE1 stem model (Model B), MINI stem model (Model C) and personalized stem model (Model D) were established, respectively. The same loads and constraints were applied to four groups of models, and the von Mises stress distribution and deformation were calculated and analyzed, so as to compare mechanical stability of each model. Results The deformation of all THR models was smaller than that of the femur model under physiological state. The deformation of Model B was close to that of Model C, and the deformation of Model A was close to that of Model D. The peak stress of Model C was higher than that of the other 3 models, reaching 9555 MPa. The overall stress trend was Model C > Model B > Model D> Model A > Model under physiological state. Conclusions The peak stress, stress distribution of personalized short femoral stem were similar to that of SMF stem, with reasonable stress distribution, small stress shielding of the proximal femur, minimum overall deformation and shear stress of the prosthesis, and its effectiveness and stability could meet the requirements of human biomechanics, which could provide references for joint surgeons and prosthesis researchers.

OBJECTIVETo characterize the complete genome sequence of coxsackievirus B5 (CVB5)A210/KM/09 strain which was isolated from Yunnan, China, 2009.

METHODSEight overlapping clones covering the whole viral genome (excluding the poly-A tail)were obtained by RT-PCR and sequenced, with their nucleotide and amino acid sequences compared with other known CVB5 strains.

RESULTSThe genome of the CVB5 A210/KM/09 strain had 7 372 nucleotides in length, and containing a 742-nt non-translated region (NTR) at the 5' end and a 98-nt NTR at the 3' end. The entire open reading frame contained 6 555 nt, encoding a 2 185-aa polyprotein. In the coding region, there appeared no nucleotide deletion or insertion, but some changes of amino acid seemed unique. Based on the complete genome sequence alignments, CVB5 isolate A210/KM/09 strain showed the highest nucleotide (92.5%) and amino acid (97.3%) identities to the CVB5/CC10/10. It also shared nucleotide (80.1%-92.5%) and amino acid (95.0%-97.3%) homology with other CVB5 strains: 17Y, 19CSF, 20CSF, 1954/85/US, 2000/CSF/KOR, 03001N, CoxB5/Henan/2010, VB5/SD/09 and Faulkner. Blast between genome fragments, A210/KM/09 showed similarity on nucleotide (80.1%-92.5%) and amino acid (95.0%-97.3%) identities with other CVB5 strains. The phylogenetic tree, constructed on the complete VP1 regions, indicated that CVB5 could be divided into genotype A, B, C and D. while Genotype C and D could be further divided into C1-C4 and D1-D4 subgenotypes.

CONCLUSIONA210/KM/09 and other CVB5 predominant strains isolated in China belonged to CVB5 subgenotype C4.

Child, Preschool ; China ; epidemiology ; Encephalitis, Viral ; epidemiology ; virology ; Enterovirus B, Human ; genetics ; isolation & purification ; Female ; Genome, Viral ; Genotype ; Humans

Oral potentially malignant disorders (OPMDs) are precursors of oral squamous cell carcinoma (OSCC). Deregulated cellular energy metabolism is a critical hallmark of cancer cells. Peroxisome proliferator-activated receptor-gamma coactivator-1 alpha (PGC1α) plays vital role in mitochondrial energy metabolism. However, the molecular mechanism of PGC1α on OPMDs progression is less unclear. Therefore, we investigated the effects of knockdown PGC1α on human dysplastic oral keratinocytes (DOKs) comprehensively, including cell proliferation, cell cycle, apoptosis, xenograft tumor, mitochondrial DNA (mtDNA), mitochondrial electron transport chain complexes (ETC), reactive oxygen species (ROS), oxygen consumption rate (OCR), extracellular acidification rate (ECAR), and glucose uptake. We found that knockdown PGC1α significantly inhibited the proliferation of DOKs in vitro and tumor growth in vivo, induced S-phase arrest, and suppressed PI3K/Akt signaling pathway without affecting cell apoptosis. Mechanistically, downregulated of PGC1α decreased mtDNA, ETC, and OCR, while enhancing ROS, glucose uptake, ECAR, and glycolysis by regulating lactate dehydrogenase A (LDHA). Moreover, SR18292 (an inhibitor of PGC1α) induced oxidative phosphorylation dysfunction of DOKs and declined DOK xenograft tumor progression. Thus, our work suggests that PGC1α plays a crucial role in cell proliferation by reprograming energy metabolism and interfering with energy metabolism, acting as a potential therapeutic target for OPMDs.
Humans ; Carcinoma, Squamous Cell/metabolism* ; Cell Proliferation ; DNA, Mitochondrial ; Energy Metabolism ; Glucose ; Mouth Neoplasms/metabolism* ; Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha/metabolism* ; Phosphatidylinositol 3-Kinases ; Reactive Oxygen Species